[all-commits] [llvm/llvm-project] bbbcb2: [LLVMABI][AARCH64] Handle conditions for ignoring ...

[Andy Kaylor via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbbcb2eb4f793af95ba9380a2c8be1e33cb6fdb2
      https://github.com/llvm/llvm-project/commit/bbbcb2eb4f793af95ba9380a2c8be1e33cb6fdb2
  Author: Andy Kaylor <akaylor at nvidia.com>
  Date:   2026-09-21 (Mon, 21 Sep 2026)

  Changed paths:
    M clang/lib/CodeGen/CodeGenModule.cpp
    M clang/test/CodeGen/AArch64/abi-classify-arg-types.c
    M clang/test/CodeGen/AArch64/abi-classify-arg-types.cpp
    M clang/test/CodeGen/AArch64/abi-classify-return-types.c
    M clang/test/CodeGen/AArch64/abi-classify-return-types.cpp
    M llvm/include/llvm/ABI/TargetInfo.h
    M llvm/include/llvm/ABI/Types.h
    M llvm/lib/ABI/TargetInfo.cpp
    M llvm/lib/ABI/Targets/AArch64.cpp
    M llvm/lib/ABI/Types.cpp
    M llvm/unittests/ABI/AArch64TargetInfoTest.cpp
    M llvm/unittests/ABI/TypesTest.cpp

  Log Message:
  -----------
  [LLVMABI][AARCH64] Handle conditions for ignoring empty types (#224476)

This adds AArch64 ABI library handling to decide when empty records and
zero-sized (non-SVE) types can be ignored as arguments and return types.
These are always ignored as return types, but the argument handling
depends on the language and ABI kind.

Assisted-by: Cursor / various models



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